Line variations of Hα emissions and absorptions of Be stars

We present the spectroscopic variations of 14 program Be stars observed within 2008 - 2009 at the Bosscha Observatory, Lembang, Indonesia, using Zeiss Double Refractor equipped with Bosscha Compact Spectrograph. The Be stars show spectroscopic profiles as Be and Beshell, and sometimes as B-normal. T...

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Published inJournal of physics. Conference series Vol. 1153; no. 1; pp. 12146 - 12149
Main Authors Aprilia, Muztaba, R., Irfan, M, Puspitaningurm, E., Ramadhania, G.E., Malasan, H.L.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2019
Subjects
B stars
H alpha line
Spectroscopy
Stars
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Summary:We present the spectroscopic variations of 14 program Be stars observed within 2008 - 2009 at the Bosscha Observatory, Lembang, Indonesia, using Zeiss Double Refractor equipped with Bosscha Compact Spectrograph. The Be stars show spectroscopic profiles as Be and Beshell, and sometimes as B-normal. These profiles originate from the disk-like envelope or rings surrounded the star's equatorial plane. Our program stars are: 5 as Be single-peaked, 2 as Be double-peak, and 7 as B-normal stars. We also measure the Ip/Ic ratio from the line profiles.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1153/1/012146